Mold for glass-blowing machines.



No. 800,352. PATENTED SEPT.4 26, 1905.

H..-BARD. 4 MOLD POR GLASS BLOWING MACHINES.

APPLIOATION FILED JULY 14; 1903.

Z SHEETS-SHEET l UNITED STAMTESATENT ormoni.

HARRY BARD, OF MILLVILLE, NEW JERSEY, ASSIGNOR TO MILLVILLE MACHINE COMPANY, OF MILLIILLE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

NIOLD FOR GLASS-BLOWING MACHINES.

Specicaton of Letters Patent.

Patented Sept. 26, 1905..

Application iiled l'uly 14. 1903. Serial No. 165,471.

To all whom may concern:

Be it known that I, HARRY BARD. a citizen of the United States, .and a resident of Millville, Cumberland county, New Jersey, have invented certain Improvements in Molds for Glass-Blowing Machines, of which the following is a specification.

The object of my invention is to provide a bottom member for the blow-molds of glassblowing machines arrangedto be automatically lifted into position when the mold is closed and to be automatically depressed and lower the article of hollow glassware under process of manufacture when the mold is opened. The use of suchaJ bottom provides greater ease in removing the article, and the danger of breakage is reduced to a-minimum.

Mv invention is fully shown inthe accompanying drawings, in which- Figure 1 is a sectional Aelevation of a press mold shown herewith being the familiar one' quart milk-bottle. Itswill be understood,h0w ever, that with the usual and ordinary changes of size and shape my improved form of mold may be used with any style of bottle. I-Iitherto in themanufacture of bottles of this and other characters there has been more or less diliiculty encountered in removing the bottle after it has been blown. To overcome this more or less serious difiiculty and at the same time to provide a bottom mold-section that would insure a true base or bottom for the bottle, I have arranged the bottom ofthe mold structure as an independent member and provide mechanism whereby it may be raised as the mold is closed and'depressed, carrying 1n the drawings herewith, l represents the blow-mold structure comprising the half-sections 2, which are carried by studs 3, movable transversely across the traveling bed 4 by means ofa cam-plate 5, having a suitable handle 6 pivotally mounted in the bracket 7. The bed-plate 4 is slotted at 8 for the passage of the studs, which are threaded into the sections 2 of the mold. The moldsections,there fore, are not hinged together, but are movable laterally and open entirely free when it is desired to remove the bottle. A catch-piece 9,.carried by the bed-plate 4, is provided to engage the handle and insure that the mold will remain closed when the handle is movedy over into the position shown in Fig. 2. The cam-plate 5 is suitably journaled at the center on a stud 10 and is provided with a pair of curved slots 11, in which the studs 3 are disposed.

Centrally disposed with respect to the moldsection 2 and mounted in the base-block 15 is the movable/bottom 16 ot' the mold, which is secured to and supported by means of a series of pins 17, which pass through the table or bed-plate 4, upon which the mold structures are mounted, and engage curved cam-grooves 18, formed in the upper face of the cam-plate 5. These pins are held bythe base-block 15 against lateral movement, but are free to rise and fall within the same, depending upon the position of the cam-plate, the latter serving to raise the pins and through them the bottom mold to which they are secured, while the latter assumes the lower position as soon as the mold is open, under the iniuence of gravity.

When in the closed position, the bottom mold member will be raised-into the operative position, as4 illustrated in Figs. 1,. 2, 3, and 5, the pins carried thereby being lifted to the high portion of the cam-grooves by the turning of the 'cam-plate 5. The base-block 15 serves as a guide for the half-sections 2 when the mold is opened and closed and is slotted at 19 for the passage of the studs 3.

The base-block has a ange surrounding the opening for the movable bottom, and the lower inner edge ofthe half-sections ot' the blow-mold is undercut to engage thisange, which thereby positions said sections with respect to the bottom. The bottom has an outerrim which engages the under surface of the undercut portion of the half-sections of IOO the mold so that the curved surface of saidV` 1. The Combination in nblow-mold'torglnssi blowing machines, ol" the half-sections ot' the same, means tor supporting` said seetions, studs carried by the snme, a edm-plate hnving' slots in which snid studs nre disposed, sneh :irrnngement serving` to open or Close the mold as snid cam-plate is moved, an independent bott-om for said mold, nnd menns for 'nising said bottom into the operative position by the action of the enni-plnte when the half-seetions otI the mold are closed.

2. Theeombinntion in ablow-niold forglnssblowing machines, 'ot' the lnterally-movnble half-sections, a movable bottom member lor the mold, :t eem-plate having curved slots therein, studs Carried by the half-sections and engaging said curved slots whereby said halt'- seetions may be opened and closed by tbe movement ot' the @nm-plate, depending' pins carried by the bottom member, and e series of cam-grooves carried by the cam-plate for engaging the pins ol the bottom member whereby the hitter mny be lifted into the operative position simnltnneonsly with theelosing,l ot the hnlt-ser-tions ol the blowmold.

3. Theeombimition in n blow-mold l'orelnssblowing' mnehines, ol' :i vertienlly-movnble bottom member, depending' pins enrried by the srme, n exim-plane, ezxln'l'nees enrried thereby lor eng'ngenient with snid pins whereby the bottom muy be raised into the oporntiveposition, und menns l'or moving' :ind loehingl snid inn-pinte.

-l-. Theeombinntionot the lnternlly-movnble lmllseetons ot' the blow-mold hnving their lower inner edge nnderent, n bnse-bloehY servine'ns n guide tor the snme :ind hnvine' :l linnge engng'ing the lindert-nt portion o1' the blow-mold sections when tlny :ire elosed, :1 bottom member monnted within snid bnseblock :md movzdile into :md ont ol: position with relntion to the li:illse lions. snid bottomlmving :in onler rini whieh lits in the undercut portion ol the hnllserlions ol the blo\\'-niold, :ind meons for losing snid seetions and sininllnneonsly rnisinn the movable bottom member into plnee.

ln testimony whereof l hnve signed my nnnie to thsspeeiliention in the presenee ol two snbseribingl witnesses.

HA hlY BARI lVitnesses:

'M. A. LooUn, ARTHUR (l. MULFoni). 

